public static int InteriorIntersectionCount(IGeometry geom)
{
InteriorIntersectionFinder intCounter = InteriorIntersectionFinder.CreateIntersectionCounter(new RobustLineIntersector());
INoder noder = new MCIndexNoder(intCounter);
noder.ComputeNodes(SegmentStringUtil.ExtractNodedSegmentStrings(geom));
return intCounter.Count;
}
/// <summary>
/// Node the input segment strings once
/// and create the split edges between the nodes.
/// </summary>
/// <param name="segStrings"></param>
/// <param name="numInteriorIntersections"></param>
private void Node(IList <ISegmentString> segStrings, int[] numInteriorIntersections)
{
var si = new IntersectionAdder(_li);
var noder = new MCIndexNoder(si);
noder.ComputeNodes(segStrings);
_nodedSegStrings = noder.GetNodedSubstrings();
numInteriorIntersections[0] = si.NumInteriorIntersections;
}
public static IGeometry MCIndexNodingWithPrecision(Geometry geom, double scaleFactor)
{
List<ISegmentString> segs = CreateNodedSegmentStrings(geom);
LineIntersector li = new RobustLineIntersector();
li.PrecisionModel = new PrecisionModel(scaleFactor);
INoder noder = new MCIndexNoder(new IntersectionAdder(li));
noder.ComputeNodes(segs);
IList<ISegmentString> nodedSegStrings = noder.GetNodedSubstrings();
return FromSegmentStrings(nodedSegStrings);
}
private void CheckInteriorIntersections()
{
/*
* MD - It may even be reliable to simply check whether
* end segments (of SegmentStrings) have an interior intersection,
* since noding should have split any true interior intersections already.
*/
_isValid = true;
_segInt = new InteriorIntersectionFinder(_li);
_segInt.FindAllIntersections = FindAllIntersections;
MCIndexNoder noder = new MCIndexNoder(_segInt);
noder.ComputeNodes(_segStrings); //.ComputeNodes(segStrings);
if (_segInt.HasIntersection)
{
_isValid = false;
return;
}
}
/// <summary>
/// Node the input segment strings once
/// and create the split edges between the nodes.
/// </summary>
/// <param name="segStrings"></param>
/// <param name="numInteriorIntersections"></param>
private void Node(IList<ISegmentString> segStrings, int[] numInteriorIntersections)
{
var si = new IntersectionAdder(_li);
var noder = new MCIndexNoder(si);
noder.ComputeNodes(segStrings);
_nodedSegStrings = noder.GetNodedSubstrings();
numInteriorIntersections[0] = si.NumInteriorIntersections;
}
private void CheckInteriorIntersections()
{
/*
* MD - It may even be reliable to simply check whether
* end segments (of SegmentStrings) have an interior intersection,
* since noding should have split any true interior intersections already.
*/
_isValid = true;
_segInt = new InteriorIntersectionFinder(_li);
_segInt.FindAllIntersections = FindAllIntersections;
MCIndexNoder noder = new MCIndexNoder(_segInt);
noder.ComputeNodes(_segStrings); //.ComputeNodes(segStrings);
if (_segInt.HasIntersection)
{
_isValid = false;
return;
}
}
public static IGeometry MCIndexNoding(IGeometry geom)
{
INoder noder = new MCIndexNoder(new IntersectionAdder(new RobustLineIntersector()));
noder.ComputeNodes(SegmentStringUtil.ExtractNodedSegmentStrings(geom));
return SegmentStringUtil.ToGeometry(noder.GetNodedSubstrings(), geom.Factory);
}
public static IGeometry MCIndexNodingWithPrecision(IGeometry geom, double scaleFactor)
{
IPrecisionModel fixedPM = new PrecisionModel(scaleFactor);
LineIntersector li = new RobustLineIntersector();
li.PrecisionModel = fixedPM;
INoder noder = new MCIndexNoder(new IntersectionAdder(li));
noder.ComputeNodes(SegmentStringUtil.ExtractNodedSegmentStrings(geom));
return SegmentStringUtil.ToGeometry(noder.GetNodedSubstrings(), geom.Factory);
}
private INoder GetNoder(IPrecisionModel precisionModel)
{
if (_workingNoder != null) return _workingNoder;
// otherwise use a fast (but non-robust) noder
var noder = new MCIndexNoder(new IntersectionAdder(new RobustLineIntersector { PrecisionModel = precisionModel}));
//var li = new RobustLineIntersector();
//li.PrecisionModel = precisionModel;
//noder.SegmentIntersector = new IntersectionAdder(li);
// Noder noder = new IteratedNoder(precisionModel);
return noder;
// Noder noder = new SimpleSnapRounder(precisionModel);
// Noder noder = new MCIndexSnapRounder(precisionModel);
// Noder noder = new ScaledNoder(new MCIndexSnapRounder(new PrecisionModel(1.0)),
// precisionModel.getScale());
}
public static IGeometry MCIndexNoding(Geometry geom)
{
IList<ISegmentString> segs = CreateNodedSegmentStrings(geom);
INoder noder = new MCIndexNoder(new IntersectionAdder(new RobustLineIntersector()));
noder.ComputeNodes(segs);
IList<ISegmentString> nodedSegStrings = noder.GetNodedSubstrings();
return FromSegmentStrings(nodedSegStrings);
}